Debian9配置网络源

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# 切换到root权限下 cp /etc/apt/sources.list /etc/apt/sources.list.bak # 备份原有文件 # 打开文件编辑 vi /etc/apt/sources.list   # 替换内容为刚才复制的内容 deb http://mirrors.aliyun.com/debian/ stretch main non-free contrib deb-src http://mirrors.aliyun.com/debian/ stretch main non-free contrib deb http://mirrors.aliyun.com/debian-security stretch/updates main deb-src http://mirrors.aliyun.com/debian-security stretch/updates main deb http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib deb-src http://mirrors.aliyun.com/debian/ stretch-updates main non-free contrib deb http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib deb-src http://mirrors.aliyun.com/debian/ stretch-backports main non-free contrib # 保存并退出   # 配置好之后更新软件包列表 apt-get update # 升级系统所有软件 apt-get upgrade # 升级系统版本 apt-get dist-upgrade